Covering rail projects along the Twin Cities - Madison - Milwaukee - Chicago Corridor, and delving into the history of the Hiawathas, Zephyrs, and 400s which raced through this region in excess of 100 mph in the 1930s, '40s, and '50s.

List of rail organizations along the corridor

I'll try to make some links to rail organizations roughly along the Hiawatha / Zephyr / 400 corridors.